This was indeed one of our evolving theories.

However Authur's information is very interesting and very close to fitting the whole mystery very well too. And perhaps even more plausible.

Also keep in mind, in normal configuration, there is a large belly pan of plastic that sits below this all and would catch any oil coming off the motor. We removed that for diagnosis and still have it off. But it was on and intact when the oil was changed, car driven from one shop to another (30 some miles or so) and when I first started examining it. And the oil was dripping from the rear of that pan.

However I am trying not to make a $1200 mistake so I want to flesh out and minimize the risk of that as much as possible. If I (we) conclude that he gets more money for it. However... one always knows there is a risk and has to be prepared for it to bite you in the arse later anyway. Just want to go into it as sure as one can be. If it turns out I buy it and it has to be replaced.... so be it I guess. But now would be a good time to know for sure. To my advantage that is.